... from the temperature 10°C to 149°C,the heating value can keep 90% at least.5,Bend radius:room temperature ... 25.4mm.room temperature −30°C,the value is 35.0mm.6,Insulation resistance:when the length of heating cable is 100m ... ,tested by 2500V DC tramegger 1 minute, the minimum value of insulation resistance is 3000MΩ.Working voltage:12V 24V 36V 110V 220V ...